import java.util.Scanner;

public class Demo3 {
    public static void main(String[] args) {
        System.out.println(add(2,3));
        System.out.println(add(2.3,3.4,4.5));
    }
    public static int add(int a,int b) {
        return a + b;
    }
    public static double add(double a,double b,double c) {
        return a + b + c;
    }
}
